They have video linesmen instituted for this tournament to check video replays for the referee if there’s any doubt about scoring or rules violations.
I haven’t seen any scandals with officiating and officials come from neutral countries to minimize the possibility of bias or favoritism.
Did you not see the play where a Serbian player was gang tackled in the penalty area in plain sight of the referee? If not, you need to find it on YouTube.
VAR is great, but the referee has to use it.